I looked at the “DC20” KS. It claims to be an evolution for ttrpgs, but I don’t see anything new. It uses action points and mana points, which seems to be the main “new” things when compared to D&D. Those have been around a while.
It looks crunchier than 5e, which is already too much for my tastes. YMMV, but it’s a pass for me.
They are using the ORC license, so there may be stuff worth hacking out of it.
@deinol I think the term that used to be used for these is "fantasy heartbreaker".
The '90s was full of "the next step in the evolution of ..." games, and they were invariably (pre-3.0) D&D with minor rules "fixes". It was painfully clear that these "next step evolution" game designers hadn't cracked open a non-D&D game, like, ever. Nor read APAs like Alarums & Excursions.